US 11,982,963 B2
Image processing apparatus and image processing method
Ryota Saeki, Sunto Shizuoka (JP)
Assigned to Toshiba Tec Kabushiki Kaisha, Tokyo (JP)
Filed by TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 14, 2022, as Appl. No. 17/986,096.
Application 17/986,096 is a continuation of application No. 17/313,786, filed on May 6, 2021, granted, now 11,526,108.
Claims priority of application No. 2020-133817 (JP), filed on Aug. 6, 2020.
Prior Publication US 2023/0072166 A1, Mar. 9, 2023
Int. Cl. G03G 15/00 (2006.01); G03G 15/20 (2006.01)
CPC G03G 15/55 (2013.01) [G03G 15/2039 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image processing apparatus, comprising:
an image forming unit configured to form an image on a sheet;
a heating device including a belt that contacts the sheet and a plurality of heating elements for heating the belt, the heating elements being arranged on a substrate along a longitudinal direction perpendicular to a sheet conveyance direction and including a first heating element at a center position of the substrate in the longitudinal direction;
a pressure roller configured to press the sheet against the belt, the pressure roller including a thermometer facing the first heating element;
a voltage detection circuit configured to measure a voltage applied to the heating elements; and
a controller configured to determine a number of abnormal elements among the heating elements according to a voltage drop value that is based on voltages measured by the voltage detection circuit before and after the plurality of heating elements is energized.